Many installable drivers process the second parameter of the DRV_OPEN message, giving the system and applications the means to send additional information to the driver when opening an instance.
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美
- 很多可安裝驅動(dòng)程序都處理DRV_OPEN消息的第二個(gè)參數，在處理過(guò)程中，給與系統和應用程序在打開(kāi)驅動(dòng)實(shí)例時(shí)給驅動(dòng)程序發(fā)送附加信息的手段。
